Add 42/63 and 42/90, Solve 42/63 + 42/90 as a fraction

Add 42/63 and 42/90

42/63 + 42/90 is 17/15.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 90 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 63 × 10 = 630,
42/63 = 42 × 10/63 × 10 = 420/630
Likewise, for the 2nd fraction, since 90 × 7 = 630,
42/90 = 42 × 7/90 × 7 = 294/630
Add the two like fractions:
420/630 + 294/630 = 420 + 294/630 = 714/630
714/630 simplified gives 17/15
So, 42/63 + 42/90 = 17/15
In mixed form: 12/15

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